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Problem with temperature sensor?

A

afx

n00b
Joined
Aug 1, 2004
Messages
55
I have a Core 2 Duo E6400 with an Asus P5W DH Deluxe and when I'm in the BIOS, the temperature reads 39-40C but when I'm in XP and I use Intel TAT or Core Temp, the temperature is at 58C.

Which temperature is the good one?

By the way, the temperature is the same if I put the CPU at stock speed and voltage (2.13 and 1.2) and when I overclock (2.4, 1.375).

Edit: In Speedfan 4.33, the CPU temp is 43C and the Core temps is 57-58C.
Edit2: Stock Intel cooling with thermal pad.
 
afx said:
I have a Core 2 Duo E6400 with an Asus P5W DH Deluxe and when I'm in the BIOS, the temperature reads 39-40C but when I'm in XP and I use Intel TAT or Core Temp, the temperature is at 58C.

Which temperature is the good one?

By the way, the temperature is the same if I put the CPU at stock speed and voltage (2.13 and 1.2) and when I overclock (2.4, 1.375).

Edit: In Speedfan 4.33, the CPU temp is 43C and the Core temps is 57-58C.
Edit2: Stock Intel cooling with thermal pad.
Click to expand...

It's normal for your temps to be higher inside your O/S environment because your CPU has to do some work. But for it to jump 18ºC is quite a big jump... Anyone else?
 
Those temps are high. Use CoreTemp 0.95.4 to check your core temps. At stock speeds with stock cooling, you should be in the 30°C range at idle, and only 50°C range during load, with an ambient room temp of 22°C.
 
Core Temp 0.95.4 Temps:

Tjunction = 85C
Core #0 = 58C
Core #1 = 57C

.... My case is pretty clean, there's no cable running everywhere too.
 
Here's a (awful) drawing of what it looks like in my case. Antec NSK6500

fans.png


I removed the tube thats brings air from the outside of the case to the CPU fan and replaced it with a 8cm Antec fan I had from another case. I also added a 8cm fan to the rear of my X1900XTX to keep it from overheating.

In the rear, there's a 12cm fan blowing out.
 
afx said:
Core Temp 0.95.4 Temps:

Tjunction = 85C
Core #0 = 58C
Core #1 = 57C

.... My case is pretty clean, there's no cable running everywhere too.
Click to expand...

Idle?!?!? What are your settings? voltage, FSB, etc>?

It really looks like you have to re-seat your CPU HSF. I don't think its on properly. Here's a video on youtube of how to install it:

http://youtube.com/watch?v=OFEOd7nQbuQ
 
I'll try to reinstall the HSF, but this time I'll use AS5, if I find my tube...

Any tip on putting AS5 on a C2D? (I'm watching the video, I don't know if they talk about that, or if they show the stock pad)

FSB is at 300mhz with the stock multiplier, Vcore is at 1.375v.

Which gives 1-2C more than the stock settings at Vcore 1.2v.
 
afx said:
Now with AS5:

45-46C at idle, at 2.4GHz.

Good enough?
Click to expand...

better, but not good. Your chip's IHS must be concave or something, lol! With stock cooling, my E6400 @ 2.4Ghz was idling in the low 30's.
 
What should I do then? Wait for the break-in and see if it drops more?
 
Make sure none of the HSF fasteners popped out... the HSF should be firmly on there. Turn off Auto fan control if you don't mind the little noise.
 
my temps w/ both duo and quad have always idled i lw 40s...thats nothing to worry about and is largely due to diff. ambient temps pp. have. What IS impt. is your load temps, which for your cpu sould stay under 61C ibelieve. run prime95or Orthos and see where you are
 
With OCCT for the 30min test, the highest it went to was 58C, but it was mostly 56-57C. At 2.4.
 
afx said:
With OCCT for the 30min test, the highest it went to was 58C, but it was mostly 56-57C. At 2.4.
Click to expand...

I'd call that good. That's about where my temps are at idle, but my Tjunction = 100C.
 
I noticed that when my temps were in the 56-57C load, when it came back it idled at 49-50C. And it hasn't gone back to the 45-46C. So now I'm considering a new cooler, because mine was really difficult to lock in place because the plastic pins we're bent.

Which one is good and isn't too loud? (Like the stock cooler if possible)
 
I bought the Tuniq. I'll probably receive it tomorrow morning, but I'd like to know what's the best way to remove AS5 from the CPU case?
 
afx said:
I bought the Tuniq. I'll probably receive it tomorrow morning, but I'd like to know what's the best way to remove AS5 from the CPU case?
Click to expand...

90% Isopropyl alcohol and a coffee filter (lint-free cloth). I'd suggest removing the CPU from the board when cleaning it. Cover the bottom with its plastic cover it shipped with. Use Q-tips for the edges.
 
Tuniq Tower installed.

FSB: 333MHz
Vcore: 1.375V

Idle temp: 39-41C
Load temp with Orthos for 20min: 53C

Stable with Orthos and OCCT. I'll try to bump it more to get the memory at 400MHz.

Edit: I tried to bump it at 350MHz and it wouldn't boot. I think I'm limited by the motherboard (P5W DH Dlx).

Edit2: I lowered the vcore to 1.325v and the idle temp are at 41-43C. Still at 333MHz.
 
Here's a nice idle temperature number to shoot for.

cooljc7.png


Having a cool room temp of 17C makes a big difference.
 
Idle temps are fairly meaningless unless something is terribly wrong.

As long as your computer is stable at full load, you really don't have to worry about what temperature your CPU is running at. These Core processors are fairly bullet proof.

Here's a nice trouble free 10 hour run of Orthos at 74C.



There's no arguing the fact that the cooler you can run your processor, the more you'll be able to overclock it. In your case, your motherboard is going to hold you back long before your CPU ever does so enjoy it and don't worry about what temperature it's running. Even if the number sounds a little scary, it really isn't. :D

Edit: I suggest you don't put too much faith in reported bios temps either. My Asus P5B Deluxe is sometimes out to lunch.
 
Ok thanks, anyways, I just reinstalled the HSF. The temp is back at 36-37C at idle and 45C under load (3min in Orthos small FFTs) and I lowered the vcore to 1.3v (stock is supposed to be 1.2v).

But I have a question regarding the mobo. I see people with the same motherboard and on stock cooling achieving 400MHz, why can't I go higher than 333MHz? (which is stable!).
 
afx said:
But I have a question regarding the mobo. I see people with the same motherboard and on stock cooling achieving 400MHz, why can't I go higher than 333MHz? (which is stable!).
Click to expand...

You probably need more voltage. Your temps are low enough that you can turn up the juice a bit more. Intel max voltage is 1.55v with a load temp of 60°C, max, for safe operation. The limit of the CPU is around 85°C, so stay as far away from that as you can.
 
enginurd said:
You probably need more voltage. Your temps are low enough that you can turn up the juice a bit more. Intel max voltage is 1.55v with a load temp of 60°C, max, for safe operation. The limit of the CPU is around 85°C, so stay as far away from that as you can.
Click to expand...

So should I put the FSB at 350 and increase the vcore until it boots?

Edit: Or is there another reason why it refuses to boot?
 
afx said:
So should I put the FSB at 350 and increase the vcore until it boots?

Edit: Or is there another reason why it refuses to boot?
Click to expand...

There could be several reasons if it won't post including RAM, CPU, MB, power supply, or bios settings. You should post more info about your system, so someone can help you.
 
I took screenshots of the important BIOS screens and CPU-Z.

Other than that, the power supply is a Corsair HS520. The video card is a X1900XTX. And the memory is 2 sticks of OCZ Gold XTC 1GB PC2-6400.

cpu-z.png

bios1.jpg

bios2.jpg

bios3.jpg

bios4.jpg


Edit: With a Vcore of 1.4, it wouldn't boot at 350MHz... and the RAM was at a lower frequency than 400MHz (800).
 
lower your cpu multiplier to 6x and start at 333... keep voltage at stock, ram timings at spd, and start to increase the fsb. see how far you can get with the voltages at stock speed. once it won't boot, feed it a bit more voltage. have you read the oc'ing guide in the oc'ing subforum? if not, check it out first.
 
enginurd said:
lower your cpu multiplier to 6x and start at 333... keep voltage at stock, ram timings at spd, and start to increase the fsb. see how far you can get with the voltages at stock speed. once it won't boot, feed it a bit more voltage. have you read the oc'ing guide in the oc'ing subforum? if not, check it out first.
Click to expand...

I read the oc'ing guide in the subforum but they weren't talking about the multiplier anywhere. But I did what you asked and now I'm running at 400MHz with the multiplier at 6x, I had to increase the vcore to 1.3v. But once I achieved that, what are the steps?
 
Could be the fan settings in the bios, I owned a P5W DH and if I had the CPU fan settings on silent my idle and load temps went up 10 degrees due to the low rpms of the CPU fan as the motherboard tried to limit noise output. A bit late, but good luck.
 
infin@ said:
Could be the fan settings in the bios, I owned a P5W DH and if I had the CPU fan settings on silent my idle and load temps went up 10 degrees due to the low rpms of the CPU fan as the motherboard tried to limit noise output. A bit late, but good luck.
Click to expand...

No, I already disabled that, but the Tuniq Tower 120 has a manual knob for the fan speed.
 
(Semi) Success!

I realised what the problem was. When I set the RAM at SPD, everything worked. The FSB is now at 400MHz, RAM at 800MHz (still at SPD, which is 5-6-6-18-24) and vcore is at 1.4v.

10 minutes ago, it was at 1.375v but after running 10min of orthos at 55C, I decided to open Firefox to tell you guys it worked, but it crashed...

Last question, why is my RAM not accepting the timings I give it? I'm following the specs, which are 5-5-5-15-22. The voltage for the RAM is at 2.1 which is the stock value (since I'm not overclocking the RAM).

Edit: 14min into Orthos (Small FFTs) and Firefox browsing, temperatures are at 56C.
 
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